Rotary pump



Dec. 4, 1928.

J. E. LE Busv ROTARY PUMP Filed Oct. 11

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yParent lJ'OHN E. LE BUS, OF ELECTRAQTEXAS, ASSG'OR OF ONE-SXTH T0 WILLIAM CAL- VERT, ONE-SIXTH TO J. H. HOVELL, ONE-SXTH T L. D. EMBRY, ONE-SIXTH T0 GUS M. HAMER, AND ONE-SXTH TO L. ROBE. l y

ROTARY PUMP.

Application led october 11, 1927. Serial No. 225,509.

rlhis invention relates to a rotary pump for oil wells. y An object of the invention is the provision of a device for pumping oil wells or wells containing water in any stage of development and at any depth, the pump in the case of oil wells being sufficiently effective that bailing is eliminated and the pumping may be done without setting the usual casing. v

Another object of the invention is the provision of a pump which is capable of removing water from oil wells and also for removing mud from the hole when said mud is eing pumped directly into the slush pit.

Ad nother object of the invention is the provision ot a simple and effective construction which may be placed in an oil well for hailing the water and for removing mud from the hole, means being employed in the pump for 20 automatically closing the circulation through the pump wnen desired, circulation being again created at Will.

This invention will be best understood from a consideration of the following detailed de- 25 scription in connection with the accompanyla\vings, nevertheless it is to be underiat the invention is not conlined to the disclosure being susceptible oi such changes and modifications as shall define no material 30 departure from the salient features of the invention as expressed in the appended claims.

ln the drawings f Figure 1 is a vertical section of the pump shown in an operative position,

Figure 2 is a similar vertical section showing the pump in position with the circulation closed7 Figure 3 is a view in elevation of a seating shoe of the pump,

Figure 4 is a horizontal section taken along the line 4 4 oit Fig. 2,

Figure 5 is a view in perspective of a yoke causing rotation and likewise reciprocation of the pump plunger.

Referring more particularly to the drawings designates the top working barrel'of the pump which is threaded at 11 in a swivel head or collar 12 and forming part of a race with a second collar 13 having aball bearing 50 14. A packing gland 15 is threaded at 16 into a main body of the pump 17, the inner end of the packing gland resting upon ball bearings 18 which are carried by .a'recess formed in the collar or swivel head 12.'

A combined packing nut and'gland 20 is threaded at 21-into the collar 15 and `has threaded engagement with a nut 22, as shown at 23. A gasket 24 is seated within a pocket in the gland and held in place by the nut 22. A second packing 25 is seated within a pocket in the packing gland 15 and is maintained in place by combined packing gland and nut 20. i

- A mandrel 'has an axial passage 31 eX- tending longitudinally thereof, said mandrel being slidably mounted Within the top working barrel 10. Keys 32 secured to the innerA wall of the barrel l0 are adapted to ride within slots 33 formed in the mandrel 30 so that when the top barrel 10 is rotated the mandrel 30 will likewise be rotated but will be permitted to have a longitudinal movement in the working' barrel. rlhe inner end ofthe mandrel is provided with an internally threaded pocket 35adapted to receive the threads of a hollow boss 36 formedintegrally with a hollow screw 37.v A packing 38 is r ceived within an annular groove inthe mandrel 30 and is held in place by a nut 3:9 tlneaded onto the outer end of the mandrel. rlhe screw 37 is provided with right and left hand threads respectively, designated by the numerals 40 and 41, which are adapted to be engaged by a yoke 42 carried by an arm 43 mounted in a passage 44 in the retainer or collar 13k. Set screws 45 are adapted to secure the retainer 13 to the main body of the pump 17. A working barrel 46 embraces the screw 37 and is adapted to receive a plunger 47 which has an internally recessed portion received by the threads of an inner reduced hollow boss 48 of the screw 37. The plunger 47 is provided with an annular groove to receive a packing ring 49 which is held in place on the plunger by means of a nut 50. The plunoer has a passage l51 which is in open communication with the passage 52 in the screw 37 which in vturn alines with'the passage 31 in the mandrel 30. The lower end of the plunger is provided with a pocket 53.

Threaded into the inner end of the pocket 53 is a valve cage 54 having a plurality. of radial passages 55 which connect the Vinterior 'Y of the working barrel 46 with the chamber 56 y of the retainer 13. This disc is provided with a plurality of perforations 64 which will permit the passage of fluid between the hollow sleeve 63 and the working barrel 46. This disc alsois adapted to engage the inner end of the vstem 57 :tor moving and retaining the valve 59 from its seat as will be presently explained.

The wall of the sleeve 63 is of sufficient width to provide for a plurality of vertical l passages 65 which extend `from the inner end of the sleeve to an annular passage 66 at the outer end of said sleeve. rThe passage 66 is so formed that a head or closure 67 is provided at theouter end of the sleeve 63 and which is adapted to support the disc 61. This sleeve has a central passage 68 which extends trom the inner end of the sleeve to the annular passage 66 and is in communication with the last named passage. Pipes 69 are slidably mounted in the passagesv 65 and are maintained in engagement at their inner ends with a `partition 7 6 formed in a seating` shoe 71 by springs 72.

A pipe 73 is closed at its lower end with a conically shaped cap y7 4 and adjacent said end is provided with a plurality of pertorations 75 for placing the pipe in'communicationwith y the well. The upper end of the pipe, as shown at 76, is threaded into the central pas sage 68 of the sleeve 63. A valve cage 77 is threaded at 78 into the upper outer end ot the pipe 73 and has a central passage 79 placing the passage 68 in communication with the pipe 73. `A stem 8O is slidably mounted in the cage and carries at its upper end a valve 81 adapted to engage a seat 82V carried by the outer end of the cage 77.

The seating shoe, as shown at 84, is conically shaped and is so formed that it? will vneatly tit the bottom of a well when desired. Pins 85 are secured in the sleeve 63 at diametrically opposite points and adapted to engage slots 86 Jformed in the side wall of the member 71. The lower end ot the shoe is closed, as shown at 87 and is provided with a plurality ot' passages into which are secured wash pipes 88. These pipes extend downwardly in parallel relation with the pipes 73 and are adapted to place the well in communication. with a chamber 89 formed in the shoe collar 9() has threaded engagement, as shown at 91 and 92,.respectively, with the main body 17 of the pump and the sleeve 63 whereby the sleeve is rigidly connected with the body.

The operation of my device is as follows: Vhen it is desired to wash the well in the usual manner the string of pipe are connected vwith the upper working barrel 10 and are Slowly rotated whereby the upper working barrel is rotated as is the mandrel 30 and the screw 37. This causes the plunger V47 to move downwardly whereby the inner end of the stem 56 will engage the disc 61 and force the valve 59 from its seat. Tater is then turned on which will flow down through A the barrel 10, the' passages 31, 52, and 51 through the valve cage and perforations 64 in the disc 61 through the annular passage v66, the vertical passages 65, the tubes 69,

whereby the pins 85 will ride in the inclined slots 86 and suiificie'ntly rotate the shoe 7l to cause the pipes 69 to ride over the surface ofthe partition 70 and place the lower ends 'ot the pipes out of alinement with the passages in the partition 70. During pumping of the well or during bailing it is only necessary to rotate the working barrel 10 whereby thev mandrel 30 will not only be revolved with thel working barrel, but due to the fact that yoke 42 engages the right and lei't hand threads of the screw 37, the screw will be reciprocated in opposite directions, as will be the plunger 47 and its packing 49, due tothe fact that the keys 32 will permit reciprocation of the mandrel and also roti tion of the same. During the reciprocation of the pump while being rotated, fluid will be drawn upwardly and forced out from the barrel. 46 through the passages 55 in the valve casing, pastv valve 59 and through pas` sages 51, 52 and 31. At this time the valve 59 is opened and closed alternately as the plunger is reciprocated. During norn'ial operation of the pump the shoe 71 isseated on the bottom ot' the well so that the fluid is plunger' each being tor pumped liquid.

2. A pump comprising a tubular body, a pump Cylinder in the body and supported by said body, a working barrel mounted 'tor rotation in the body, a mandrel adapted to be rotated by the barrel, means fior Causing reeiprocation ot the mandrel when the same is rotated, a plunger connected with the mandrel, a valve or Controlling the flow ot liquid to the cylinder, and means ttor openingthe valve and for maintaining said valve in open position when desired, said mandrel and plunger each being provided with a passage Jor pumped liquid.

3. A, pump comprising a tubular body, a pump Cylinder in the body and supported by said body, a working barrel mounted for rotation in the body, a mandrel adapted to be rotated by the barrel, means for Causing reeiproeation ot the mandrel when the same is rotated, a plunger Connected with the mandrel, a valve orcontrolling the flow of liquid to the cylinder, a hollow seating shoe eonneeted with the body, a valve in the shoe for controlling the flow otl liquid to thetubular boe y, said mandreland plunger each being provided with a passage itor pumped liquid.

4l. A pump comprising a tubular body, a pump Cylinder in the body and supported by provided with a passage said body, a working barrel mounted for rotation in the body, a mandrel adapted to be rotated by the barrel, means for causing reeiproeation of the mandrel when the same is rotated, a plungerv Connected with the mandrel, a valve for controlling the flow of liquid to the cylinder, and means for opening the valve and for maintaining saidvalve in open position when desired, a valve in the tubular body, located inwardly ot the lirst mentioned valve, land controlling the flow ot the liquid to the first mentioned valve, said mandrel and 'plunger each being provided with a passage for pumped liquid.

5. A pump comprising a tubular body, a pump cylinder in the body and supported by said body, a working barrel mounted tor rotation in the body, a mandrel adapted to be rotated by the barrel, means for causing reciproeation of the mandrel when tne same is rotated, a plunger connected with the mandrel, a valve for' controlling theflow of liquid to the `cylinder, a hollow seating shoe eonnected with the tubular body and provided with a transverse partition having openings therein, pipes adapted to register with the openings, means for causing rotation ot the shoe to displace the opening relative to the pipes for Cutting oil communication between the cylinder and outer end oft the shoe, said mandrel and plunger each being provided wi th a passage for pumped liquid.

G. pump comprising a tubular body, a pump Cylinder in the body and supported by said body, a working barrel mounted for rotation in the body, a plunger mounted for sliding and rotary motion in the cylinder,

means connecting the plunger with the work-H ing barrel and :tor Causing reoiproeation of the plunger whe-n the barrel is rotated, a suotion valve in the Cylinder controlling the flow of liquids through said cylinder, and means 'adapted to open' and retain the valve open when the plunger is moved to an inward position, lsaid plunger having a passage for pumped liquid.

7. A pump comprising a tubular body, a pump cylinder in the body and supported by said body, a working barrel mounted for ro-y tation in the body, a plunger mounted for sliding and rotary motion in the cylinder, means-connecting the plunger with the working barrel Vand for eausingreciproeation of the plunger when the barrel is rotated, a suetion valve in the cylinder Controlling the Aflow of liquids through said cylinder, means adapted to open and retain the valve open when the plunger is moved to an inward` po-` sition, a seating shoe, a sleeve connecting the shoe with the body member, said sleeve being in communication with the cylinder, a pipe carried by the sleeve and extending through the shoe, a Valve in the pipe for Controlling Communication between the pipe and the Cylinder, and means for controlling communication between the cylinder and shoe externally ot the pipe, said plunger having a passage for pumped liquid.

8. A pump comprising a tubular body, a pump cylinder in the body and supported by said body, a working barrel mounted `tor rotation in the body, a plunger mounted for.,

sliding and rotary motion in the` Cylinder, means connecting the plunger with the working barrel and for Causing reciprooation ot the plunger when the barrel is rotated, a suotion valve in the cylinder Controlling the flow of liquids through said Acylinder, means adapted to open and retain the valve open when the plunger is moved to an inward position, a hollow shoe, a sleeve connecting the hollow shoe with the body member and being in communication with the cylinder, a plate axially disposed with respect to the seating shoe and placing the sleeve in oommunioation with the exterior of the shoe, a valve for controlling communication between the pipe and the sleeve, said plunger having a passage tor pumped liquid.

9. A pump comprising a tubular body, a pump cylinder in the body and supported by said body, a working barrel mounted for roplunger is moved to an inward position, a hollow shoe, a sleeve connecting the hollow shoe with the body member and being in communication with the cylinder, a plate axially disposed with respect to the seating-shoe and placing the sleeve in communication with the 'exterior of the shoe, a valve for controlling communication between the pipe and the sleeve, a partition in the shoe dividing thek shoe into a pair of chambers and provided with a plurality of passages, tubes slidably mounted in the sleeve and adapted to aline with the passages inthe partition for placing the sleeve in communication with the shoe externally of the pipe, said plunger having a-,passage for pumped liquid. Y

l0. A pump comprising a tubular body, a pump cylinder in the body and supported by said body, a working barrel mounted for rotation in the body, a plunger mounted for sliding and rotary mot-ion in the cylinder, means connecting the plunger with the worl ing barrel and for causing reciprocation of the plunger when the barrel is rotated, a suction valve in the cylinder controlling the flow of liquids through said cylinder, means adapted to open and retain the valve open when the plunger is moved to an inward position, a hollow shoe, a sleeve connecting the `hollow shoe with the body member and being in communication with the cylinder, a plate axially disposed with respect to the seating shoe and placing the sleeve in communication with the exterior of the shoe, a valve for controlling communication between thel pipe and the sleeve, a partition in the shoe dividing kthe shoe into a pair of chambers and provided with a plurality of passages, tubes slidably mounted in the sleeve and adapted to aline with the passages in the partition for placing the sleeve in communicationwith the shoe externally of the pipe, means for causing rotation of the shoe for disalining the tubes with the passages and cutting off the communication between the sleeve and one of the chambers of the shoe, said plunger'having a passage for pumped liquid.

11. A pump comprising a tubular body, a pump cylinder in the body and supported by said body, a working barrel mounted for rol tation in the body, a plunger mounted for sliding and yrotaryvmotion in the cylinder, means connecting the plunger with the working barrel and for causing reciprocation of the plunger when the barrel is rotated, a suction valve in the cylinder controlling the flow of liquids through said cylinder, means adapted to open and retain the valve open when the plunger is moved to an inward position, a hollow shoe, a sleeve connecting the hollow shoe with the body member and being in communication with the cylinder,a plate axially disposed with respect to the seating shoe and placing the sleeve in communication with the exterior of the shoe, a valve Jfor controlling communication between the pipe and the sleeve, a partition in the shoe dividing the shoe into a pair of chambers and provided with a plurality ot' passages, tubes slidably Lmounted in the sleeve and adapted to aline with the passages in the partition for placing the sleeve in communication Awith the shoe externally of the pipe, means for causing rotation of the shoe for disalining the tubes with the passages and cutting olf the communication between the sleeve and one of the chambers of the shoe, a plurality of tubes for placing the outer end of the shoe in communication with the exterior of said shoe, said pipe having a closed end provided with a` plurality of perforations where said pipe projects beyond the end of the shoe, said plunger having a passage for pumped liquid.

Signed at Electra, in the county of Viohita and State of Texas, this 8th day of October, A. D. 1927.

JOHN E. LE BUS;

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